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At the Moyamoya Center at the Northwell Health Institute for Neurology and Neurosurgery, our multidisciplinary team is dedicated to the diagnosis, treatment and support of patients and their families with Moyamoya disease.
Moyamoya is a rare, cerebrovascular disorder caused by the progressive blockage of the large branches of the internal carotid artery at the base of the brain in an area called the "circle of Willis". To feed the starved cerebral tissue caused by Moyamoya disease, the body forms a network of dilated and weakened (friable) blood vessels.
The appearance of Moyamoya disease on diagnostic imaging tests is sometimes seen along with other medical conditions. When the changes in the brain blood vessels are associated with another underlying medical problem, the condition is termed Moyamoya syndrome. Medical conditions that are associated with Moyamoya syndrome include:
- Sickle cell anemia
- Neurofibromatosis type 1
- Down syndrome
- Certain congenital heart defects
- Previous brain radiation therapy
- Giant craniofacial hemangiomas
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